Public support for Prime Minister Yoshihiko Noda's Cabinet has fallen to 35.7 percent, from 44.6 percent last month, with more than half -- 50.5 percent -- expressing disapproval for the first time since Noda took office in September, a Kyodo News poll showed Sunday.

Nearly three quarters of the respondents, or 74.4 percent, said Noda's explanations about the tax plan were insufficient.